AT234690B - Process for the preparation of new ω-di (pyridyl) alkylamine compounds - Google Patents

Process for the preparation of new ω-di (pyridyl) alkylamine compounds

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Publication number
AT234690B
AT234690B AT833261A AT833261A AT234690B AT 234690 B AT234690 B AT 234690B AT 833261 A AT833261 A AT 833261A AT 833261 A AT833261 A AT 833261A AT 234690 B AT234690 B AT 234690B
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Austria
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pyridyl
general formula
preparation
new
hydrogen atoms
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Application number
AT833261A
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German (de)
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Degussa
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Publication date
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Publication of AT234690B publication Critical patent/AT234690B/en

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  • Pyridine Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von neuen   M-Di- (pyridyl)-alkylaminverbindungen   Es ist bekannt, aus Methylenverbindungen der allgemeinen Formel : 
 EMI1.1 
 worin   R.   einen gegebenenfalls durch Halogenatome oder niedrigmolekulare Alkoxygruppen substituierten Phenylrest und   R2   einen Pyridylrest bedeutet, Verbindungen herzustellen, die in je einer   Mi-Stellung   eines aliphatischen Kohlenwasserstoffrestes einen Phenyl- und einen Pyridylrest, in   Mg-Stellung   eine Aminogruppe enthalten. 



   Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung neuer Verbindungen der allgemeinen Formel I : 
 EMI1.2 
 und ihrer Salze. In dieser Formel bedeuten   R   und   R2   Wasserstoffatome oder gleiche oder verschiedene 
 EMI1.3 
 gleiche oder verschiedene Halogenatome oder Hydroxylgruppen oder Alkoxygruppen. 



   Verbindungen dieser Art haben wertvolle pharmazeutische   Eigenschaften : sie   wirken insbesondere zentralstimulierend und coronarerweiternd. 



   Es wurde gefunden, dass man Verbindungen dieser Zusammensetzung herstellen kann, wenn man ein Dipyridylmethan der allgemeinen Formel II : 
 EMI1.4 
 mit einer Verbindung der allgemeinen Formel III : 
 EMI1.5 
 

 <Desc/Clms Page number 2> 

 in Gegenwart eines alkalischen Kondensationsmittels umsetzt. In diesen Formeln haben   R1-R6   und Alk die eingangs angegebene Bedeutung, Hal ist ein Halogenatom. Die erhaltenen Basen können gewünschtenfalls in üblicher Weise in ihre Salze übergeführt werden. 



   Beispiel 1 : N-[3'-Phenyl-propyl-(2')]-1,1-di-(2-pyridyl)-propyl-(3)-amin der Formel : 
 EMI2.1 
   40, 8 g Di- (2-pyridyl)-methan   werden mit 180 ml Benzol verdünnt, dann mit 20, 3 g 50% iger Natriumamid-Benzol-Suspension versetzt und anschliessend 4 h lang am   Rückfluss   gekocht. Dann werden 36 g   1-Phenyl-2-#-brom-äthylaminopropan,   gelöst in 180 ml Benzol, zugetropft, worauf nochmals 4 h am   Rückfluss   erhitzt wird. Das Reaktionsgemisch wird sodann unter Eiskühlung mit Wasser zersetzt, getrennt und die wässerige Schicht mit Chloroform extrahiert. Die vereinigten Lösungsmittelschichten werden eingeengt, der Rückstand wird im Vakuum fraktioniert.

   Nach einem Vorlauf von überschüssigem Di-   (2-pyridyl)-methan   destilliert bei   210-2280 Cj1, 5 mm   eine Menge von 24 g N-[3'-Phenyl-propyl-(2')]-   1, 1-di- (2-pyridyl) -propyl- (3) -amin   über. Die Base erstarrt beim Anreiben zu Kristallen vom Fp. 69 bis   700 C. Mit   in Isopropanol gelöstem Chlorwasserstoff wird das Monohydrochlorid erhalten. Zur Reinigung löst man das Salz in Aceton. Daraus fällt die Substanz nach Zugabe von Äther schön kristallin aus. 



  Fp.   130-131  C.   



     Beispiel 2 : N- [3'-Phenyl-propyl- (2')]-1- (2-pyridyl)-1- (6-methyl-2-pyridyl)-propyl- (3)-amin   der Formel : 
 EMI2.2 
 86 g   &alpha;-Pyridyl-&alpha;picolyl-(2')-methan   werden in 375 ml Benzol gelöst und mit 39 g 50%iger Benzol-Natri- 
 EMI2.3 
 Beispiel 3 : N-[3'-p-Chlorphenyl-propyl-(2')]-1,1-di-[pyridyl-(2)]-propyl-(3)-amin der Formel : 
 EMI2.4 
 Wird das nach dem in den vorangehenden Beispielen beschriebenen Verfahren hergestellte Di- [pyridyl-   (2)]-methannatrium mit 1-p-Chlorphenyl-2-#-brom-äthylaminopropan umgesetzt und das Reaktionsgemisch wie üblich aufgearbeitet, so entsteht diese Base. Kp. 0, 5 mm 200-2100 C. Mit Maleinsäure   entsteht aus der Base ein kristallines Salz, das nach Umkristallisieren aus Isopropanol bei 117-120  C schmilzt.



   <Desc / Clms Page number 1>
 



  Process for the preparation of new M-di- (pyridyl) -alkylamine compounds It is known from methylene compounds of the general formula:
 EMI1.1
 where R. is a phenyl radical optionally substituted by halogen atoms or low molecular weight alkoxy groups and R2 is a pyridyl radical, to prepare compounds which contain a phenyl and a pyridyl radical in each M-position of an aliphatic hydrocarbon radical and an amino group in the Mg position.



   The present invention relates to a process for the preparation of new compounds of the general formula I:
 EMI1.2
 and their salts. In this formula, R and R2 are hydrogen atoms or the same or different
 EMI1.3
 identical or different halogen atoms or hydroxyl groups or alkoxy groups.



   Compounds of this type have valuable pharmaceutical properties: they have a central stimulating and coronary-expanding effect.



   It has been found that compounds of this composition can be produced by using a dipyridylmethane of the general formula II:
 EMI1.4
 with a compound of the general formula III:
 EMI1.5
 

 <Desc / Clms Page number 2>

 in the presence of an alkaline condensing agent. In these formulas, R1-R6 and Alk have the meaning given at the beginning, Hal is a halogen atom. The bases obtained can, if desired, be converted into their salts in a customary manner.



   Example 1: N- [3'-Phenyl-propyl- (2 ')] -1,1-di- (2-pyridyl) -propyl- (3) -amine of the formula:
 EMI2.1
   40.8 g of di (2-pyridyl) methane are diluted with 180 ml of benzene, then mixed with 20.3 g of 50% strength sodium amide-benzene suspension and then refluxed for 4 hours. Then 36 g of 1-phenyl-2 - # - bromo-ethylaminopropane, dissolved in 180 ml of benzene, are added dropwise, whereupon the mixture is refluxed for another 4 hours. The reaction mixture is then decomposed with water while cooling with ice, separated, and the aqueous layer is extracted with chloroform. The combined solvent layers are concentrated and the residue is fractionated in vacuo.

   After a forerunner of excess di- (2-pyridyl) methane distilled at 210-2280 Cj1.5 mm, an amount of 24 g of N- [3'-phenyl-propyl- (2 ')] -1, 1-di- (2-pyridyl) -propyl- (3) -amine via. The base solidifies when rubbed to form crystals with a melting point of 69 to 700 ° C. The monohydrochloride is obtained with hydrogen chloride dissolved in isopropanol. For cleaning, the salt is dissolved in acetone. After adding ether, the substance precipitates out in a nicely crystalline form.



  M.p. 130-131 C.



     Example 2: N- [3'-Phenyl-propyl- (2 ')] - 1- (2-pyridyl) -1- (6-methyl-2-pyridyl) -propyl- (3) -amine of the formula:
 EMI2.2
 86 g of α-pyridyl-α-picolyl (2 ') methane are dissolved in 375 ml of benzene and mixed with 39 g of 50% benzene-sodium
 EMI2.3
 Example 3: N- [3'-p-chlorophenyl-propyl- (2 ')] -1,1-di- [pyridyl- (2)] -propyl- (3) -amine of the formula:
 EMI2.4
 If the di- [pyridyl- (2)] methane sodium prepared by the process described in the preceding examples is reacted with 1-p-chlorophenyl-2 - # - bromo-ethylaminopropane and the reaction mixture is worked up as usual, this base is formed. Bp. 0.5 mm 200-2100 C. With maleic acid, a crystalline salt is formed from the base, which melts at 117-120 C after recrystallization from isopropanol.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung von neuen co-Di- (pyridyl)-alkylaminverbindungen der allgemeinen Formel I : EMI3.1 worin Ri und R2 Wasserstoffatome oder gleiche oder verschiedene niedere Alkylreste, Alk einen Alkylen- EMI3.2 und der Gruppe -NH- bilden, R3 und R4 Wasserstoffatome oder gleiche oder verschiedene niedere Alkylreste, R5 und Rü Wasserstoffatome oder gleiche oder verschiedene Halogenatome oder Hydroxylgruppen oder Alkoxygruppen bedeuten, und ihrer Salze, dadurch gekennzeichnet, dass man eine Verbindung der allgemeinen Formel II : EMI3.3 worin R und R2 die oben angegebene Bedeutung haben, mit einer Verbindung der allgemeinen Formel III : PATENT CLAIM: Process for the preparation of new co-di- (pyridyl) -alkylamine compounds of the general formula I: EMI3.1 where Ri and R2 are hydrogen atoms or identical or different lower alkyl radicals, Alk is an alkylene EMI3.2 and the group -NH- form, R3 and R4 are hydrogen atoms or identical or different lower alkyl radicals, R5 and Rü are hydrogen atoms or identical or different halogen atoms or hydroxyl groups or alkoxy groups, and their salts, characterized in that a compound of the general formula II: EMI3.3 wherein R and R2 have the meanings given above, with a compound of the general formula III: EMI3.4 worin R3-R6 und Alk die oben angegebene Bedeutung haben und Hal ein Halogenatom ist, in Gegenwart eines alkalischen Kondensationsmittels umsetzt und die erhaltene Base gegebenenfalls in ihre Salze überführt. EMI3.4 in which R3-R6 and Alk have the meaning given above and Hal is a halogen atom, is reacted in the presence of an alkaline condensing agent and the base obtained is optionally converted into its salts.
AT833261A 1960-11-18 1961-11-06 Process for the preparation of new ω-di (pyridyl) alkylamine compounds AT234690B (en)

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DE234690T 1960-11-18

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AT234690B true AT234690B (en) 1964-07-10

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